Hi art,
You need to delete the files indicated below, since they are left over from
an old version of the bib module. The bib style files in your tex/context/bib
dir are newer and use commands that are not in the older m-bib that gets
loaded by context.
> (/usr/local/teTeX/share/texmf.local/tex/context/extra/m-bib/m-bib.tex
> (/usr/local/teTeX/share/texmf.local/tex/context/extra/m-bib/m-list.tex
This confusion is my fault in a way, because the newer release uses t-XXX.tex
filenames instead of m-XXX.tex (different module prefix) and I forgot to
advertise that. Apparently context searches for m- files before t- files.
Greetings, Taco